Question

If x=-3 what is y=-2x+3

Answer 1

With the first equation solved, all you need to do here is to plug the first equation into the second.

`x=-3\\ y=-2x+3\\ \\ y=-2(-3)+3\\ y=+6+3\\ y=9\\ So\ y\ is\ equal\ to\ 9.`

Answer 2

Data:

`x = - 3` (I)

`y = - 2x + 3` (II)

Solving: Substitute (I) in (II)

`y = - 2x + 3`

`y = - 2*(-3) + 3`

`y = 6 + 3`

`\boxed{y = 9}`